Snap-fastener member.



G. A. HOLMES.

SNAP FASTENER MEMBER.

nrmuurox rum) SEPT. 9.100s.

926,871, Patented July 6, 1909.

WIT EESESk "pk/z J-roa =tener Members, of

UNITED sTATEs PATENT (inlriciau ti'l'lOltGl lA. HOLMES, ()l" NEWTONtlfixll llt, MASS.'lll'SE'lTlS. ASSItlNOR TO UNITED STATES FASTENER(.OlillANY. or BOSTON. MASSAtHUSE'lTS, A CORPORATION OF MAINE.

SNAP-FASTEN'ER -MEMBER.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed September 9, 1908. Serial No. 462,191.

To no 1071 am it may concern:

Be it known that I, GEORGE A. HOLMES, a citizen of the United States,and resident of Newton Center, in the county of Middlesex and State ofMassachusetts, have invented new and useful Inmrovenients in Snap-Feswhich the following is a specification.

My invention relates to snap fasteners and particularly to self-piercingstud members therefor.

One object of the invention is to provide a strong and durable fastenermemberof the class described, the parts of which quickly and easilyassembled.

A further object of my invention is to no vide a self-piercing fastenermember which may be quickly and easily attached to material and whichwill not cause the objectionable puckering commonly resulting from securing fastener members to material without previous perforation of thelatter.

A further object of inv invention is to provide a stud member which isfor all practical purposes llOl'l-(JlllSllttlilt, but still possessesall the resiliency of the ordinary bird-cage. spring.

Referring to the drawings illustrating an embodiment ofmyinvention,----Figures 1 and Bare respectively sectional views of theupper and lower portions of a stud member; and Fig. 3 shows my improvedfastener mem ber in section secured to material.

A represents the upper section of a stud may be F for use as a inoiiiberof a snap fastening pair,

com irising a resilient outer member a, commonly called a bird-cagespring, and a le-. male member or anvil spring (I, having an opening of.This anvil piece a is held Wlirlllllliilll! spring (1 by a collet a". Bis the lower section of the stud member adapted to be seated on theopposite side 'of material, and-coiiipr1sing afima member or post I)having a flange 7) and an upwardly extending annular blade orshearingpicee I)",

in applying my improved fastener member, the material without previousperlorapiece (1 within the therein, thustightly securing the parts A andB together, with the material between them, as shown in Fig. 3. i

One of the great desiderata in fasteners of this class is to perform theshearing operation in the plane of the material; for it is obvious thatif the material is carried ever so slightly into the opening a,puckering will inevitably result and the fabric will not have thatsmooth ap 'earance about the fastener which is highly esirable, if notindeed absolutely essential, in a successful commercial fastener.

In my improved fastener memberthe )ost. b does not carry the materialsiirrouin ing the post upward into the anvil )iece a.

The pressure of the post 6 against t ie' material eauses a comparativelytight stretching of the latter across the edge of the o )ening a andcontinued pressure instead 0 pushing the material upward into the anvicauses the sharp annular blade 6 .to out through the material carryingwith itonly the part of the material cut out by the shearingpiece orblade. The post I) then passes into the anvil lpiece u whereit is upset.Into this manner tie shearing operation is performed in the plane of thematerial and the latter presents a perfectly smooth appear ance when thefastener member is attached.

It will be seen furthermore that when the.

parts are assembled as shown in Fig.3, the outer or bird-cage springmember (1 is supported at its top by the top of the inner or anvil piece(1, and that the top of the anvil piece a is sup )orted by the. end ofpost I),

thus rendering tie stud to all intents and purposes rigid andiii)iicrus'liable. against any pressure or blow exerted on the top ofthe stud. By this construction I obtain all the rigidity and strength ofa solid stud, at

the same time preserving the resiliency of the bird-cage spring whichwill yield in the usual way to engage the. cap, the top of the springmember (I lifting or sprin ing away from the anvil member a when thesides of the spring member a are compressed by the cap, and thereafterreturning to its normal piece, 75

position in contact or nearly so with the antion, is placed between theparts A and l3,

\ll member a.

and pressure is then'applied by suitable iii- 50 strumeiits. Thematerial is forced by tho That 1 claim is: i

post b'agaiiist the edge of the opening a" and i l. A snap fastenermember comprising a the sharp annular blade or shearing piece o malemember having a shearing edge at its cuts quickly and easily through thematerial, top and a female n'ieiiiber disposed on the opso that the postI) terial into the auvi passes through the iiiai posite side of materialand having a shearing .1 piece a and is upset I edge substantially flushwith ats lower face, 110.

said female member and be upset therein.

r1s1ng upset therein.

2. A stud for a snap fastener 00m two arts, one part provided with aanged post aving an upwardly extending annular lade at its top, theother part dis ose the 0p osite side of material and iaving a ening, 1he edge of said opening substantial y flush i flange anvil pieceprovided with an 0 d fef with said flange, said annular blade coijperand i ating with said edge of said opening to shear into i the materialand said post passing through l said material into said anvil piece andbeing Signed by me at Boston, Massachusetts, this third day of September1908. d on GE()l (rE HOLMES. Witnesses: CHARLES l). \Yoonm-nun',JOSEPHINE 1]. RYAN.

